Effect of leucine-enriched essential amino acid supplementation combined with different exercise regimen on appendicular skeletal muscle mass and muscle performance in older adults: an open label randomized controlled trial

富含亮氨酸的必需氨基酸补充剂联合不同运动方案对老年人四肢骨骼肌质量和肌肉功能的影响：一项开放标签随机对照试验